Comment by bitexploder
1 month ago
Staring does something interesting. It does slowly reduce brain waves, but it is harder to hit theta with eyes open. And it works very differently initially. With eyes closed meditation where we, say, follow the breath we use the salience network to slowly chill the DMN for a bit. When you stare at a wall the salience network is what deactivates letting the DMN rip to try and figure what predictions are useful. But it runs out of steam and slowly the state converges with a traditional meditative state. With one important difference: your visual field is still active. Traditional meditation lets you hit theta brain waves. Eyes open is harder to hit theta with but you can definitely hit alpha waves.
So I agree it is meditation, but its quality and mechanism is interesting and different by a bit. It does make me wonder. When we traditionally meditate we grow the salience network (physically). Wall staring trains the brain to simply not seek attention in the first place. Wall staring doesn't strengthen the Salience Network's ability to act as a manager. It recalibrates the Salience Network's threshold for alarm. It trains the dACC to stop firing when nothing is happening.
So both are useful. And provide different neural wiring and myelination.
I'm curious what is meant by
> ...recalibrates the Salience Network's threshold for alarm.
Superficial googling reveals superficial information about the SN.
And more specifically, i'm curious what sort of physiological signals could verify recalibration.
Basic a high priority stimulus arrives. It is actually fascinating how this get sorted out, but the salience network say, gets a signal like, user stubbed toe, massive spike of cortisol along with pain signals filtering in from that part of the brain that manages them. When your brain gets bored it is effectively lowering its threshold to trigger "do something" <time wasters, phone scroll, etc.>. The brain is just wired up to constantly process predictive activity. By staring at a whole it stops registering stillness as a thing to activate this process of hunting for stimulative activity. This effectively lets your brain be more calm with no stimulation as it has learned this is not a "threat" state.
Being a modern human is hard. We were not really built for our life post industrial revolution. We evolved to always be ready for threats. The fact that our brains have adapted so well to modern life is amazing and why we have gotten to where we have as a species vs. others. However, it has costs. Our brains our wired to run the DMN loop non stop. So you can do two things. With traditional meditation you make your salience network stronger. Every time your DMN interrupts your meditation and you flex your salience network muscle so to speak you are training it to shift back to the lower DMN activity state. And with wall staring you are changing the brains calibration of what no stimulation means. Both contribute synergistically based on my understanding. (contribute to being less distractible).